不同方法炮制甘遂对LO2细胞周期与凋亡的影响

目的:探讨不同方法炮制所得甘遂各样品对人正常肝细胞LO2细胞周期与凋亡的影响。方法:以人正常肝细胞LO2为研究对象,采用MTT法检测甘遂醋制前后各炮制品(生品、清炒品、醋润品、醋制品)对LO2细胞活性的影响,采用倒置显微镜观察细胞形态,采用流式细胞术研究甘遂醋制前后各炮制品对LO2细胞周期和凋亡的影响。结果:与阴性对照组比较,甘遂生品可明显降低LO2细胞的活性(P<0.01)和形态,显著升高S期细胞百分率(P<0.05),显著降低G2/M期细胞百分率(P<0.01),显著增加人正常肝细胞LO2细胞的早期凋亡率、晚期凋亡坏死率、总凋亡率(P<0.01);与甘遂生品组比较,甘遂各炮制品均能降低对人正常肝细胞LO2的增殖抑制作用(P<0.01)和形态变差的趋势,其降低增殖抑制作用的顺序为醋制品>醋润品>清炒品,且呈一定的量-效关系(r醋制=0.999,r醋润=0.913,r清炒=0.914,r生品=0.984);且均能显著增加G2/M期细胞百分率(P<0.05,P<0.05,P<0.01),显著减少人正常肝细胞LO2的早期凋亡率、晚期凋亡坏死率、总凋亡率(P<0.01),其增加G2/M期细胞百分率的顺序和降低凋亡率的顺序均为醋制品>醋润品>清炒品。结论:甘遂炮制后可通过影响LO2细胞周期与凋亡降低其毒性,且甘遂醋制工艺中的炒与醋润2种操作在醋制降低甘遂的肝毒性中能够起到协同作用,从而为揭示上述2种操作在甘遂醋制减毒工艺中的合理性和醋制工艺优化提供了一定的依据。

Optimization of vinegar-steaming process for Wuweizi (Fructus Schisandrae Chinensis) with response surface method

OBJECTIVE:To optimize the vinegar-steaming process of Wuweizi(Fructus Schisandrae Chinensis)using the response surface method(RSM)based on the Box-Behnken design.METHODS:A regression model was constructed with the response variables,the content of Deoxyschizandrin,and the three explanatory factors:length of steaming time,the quantity of vinegar and length of moistening time to evaluate the effects on the processing of Wuweizi(Fructus SchisandraeChinensis).RESULTS:There was a linear relationship between the content of Deoxyschizandrin and the three explanatory factors.When the steaming time was5.49 h,with 2.365 g of vinegar added and a moistening time of 4.13 h,the content of Deoxyschizandrin reached the maximum predicted value of0.1076%,and under the conditions the average content of Deoxyschizandrin was 0.1058%.CONCLUSION:The correlation coefficient of thenonlinear mathematical model was relatively high and the model matched the data well,potentially providing a method for the study of the steaming process.